(2)ZPD / 2.ZPDI — low-voltage wound-rotor induction motor for cranes and general industrial drives, 45–1800 kW
Country: Serbia · Model: (2)ZPD / 2.ZPDI
The (2)ZPD and 2.ZPDI motors have a wound rotor with slip rings and cover powers of 45–1800 kW at 230–690 V, 50 or 60 Hz. They are installed on cranes, winches, ball mills, crushers and long conveyors with heavy starting and intermittent duty.
- Designation
- (2)ZPD, 2.ZPDI
- Rotor type
- wound (with slip rings)
- Power
- 45–1800 kW
- Voltage / frequency
- 230–690 V / 50 Hz, 60 Hz
Technical specifications
| Designation | (2)ZPD, 2.ZPDI |
|---|---|
| Rotor type | wound (with slip rings) |
| Power | 45–1800 kW |
| Voltage / frequency | 230–690 V / 50 Hz, 60 Hz |
| Shaft height (frame size) | 280–400 |
| Number of poles | 2–10 |
| Insulation class | F |
| Protection degree | IP55 |
| Cooling | IC 411 |
| Mounting | IM B3, V1 |
| Connection dimensions | IEC 60072, SEB 841, DIN 42681 (depending on version) |
| Standard | IEC 60034-1 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The rotor winding is brought out through slip rings and a brush gear to an external resistance, which can be a starting rheostat, resistor steps or a soft starter in the rotor circuit. This limits the starting current, gives a high starting torque and allows stepwise speed control. The shaft height of the series is 280–400, the number of poles from 2 to 10, so low-speed versions exist too. The enclosure is closed, IP55, with IC 411 self-ventilation, class F insulation, foot-mounted IM B3 or vertical IM V1. Connection dimensions depend on the version: besides IEC 60072, the German crane standards SEB 841 and DIN 42681 are specified for some machines. This eases replacement of a crane motor of European make without reworking the metal structure, and the general technical requirements comply with IEC 60034-1. Typical sites include metallurgical, port, overhead and gantry cranes, hoisting machines, excavators and spreaders, mills of mining and processing plants, cement kilns and pumps with heavy starting.
How to choose
Before ordering, the rotor voltage and current, the duty type (S1, S3, etc.) and the fit dimensions are checked, and the drawing of the existing motor is best sent to the factory at once. When starting is light and the speed is controlled by a frequency converter, it is simpler to fit the squirrel-cage 2.RZKIT at 18.5–2500 kW. For pumps and fans with direct-on-line starting, the IE3 3.ZKE at 18.5–1000 kW is suitable.
Request a price and lead time
(2)ZPD / 2.ZPDI — low-voltage wound-rotor induction motor for cranes and general industrial drives, 45–1800 kW. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Why does the (2)ZPD motor need a wound rotor with slip rings?
Through the rings, a starting rheostat or resistor steps are connected into the rotor circuit. The starting current decreases, the breakaway torque grows, and the speed can be changed in steps.
Will the 2.ZPDI replace a crane motor to SEB 841 or DIN 42681?
For some versions of the series the connection dimensions are specified exactly to SEB 841 and DIN 42681, for others to IEC 60072. The required version is determined from the drawing of the motor installed on the crane.
What range of power and pole numbers does the (2)ZPD / 2.ZPDI series have?
Power from 45 to 1800 kW, from 2 to 10 poles, shaft height 280–400. Multi-pole versions give a low speed for slow-running machines.
What protection degree do the (2)ZPD motors have?
The enclosure is closed with protection degree IP55 and IC 411 cooling from its own fan. The brush gear, however, needs periodic inspection and brush replacement.
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Need a price, lead time or replacement?
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